CN106989618A - Cooling system inside large volume goaf filling body - Google Patents

Abstract

The invention discloses an internal cooling system for a filling body in a large-volume mined-out area, which belongs to a concrete hydration heat dissipation device, and aims to provide a concrete hydration heat dissipation device with a simple structure, convenient use and high efficiency. It includes a fan and a heat dissipation component; the heat dissipation component is composed of a number of heat dissipation pipe groups with different curvature radii and arranged in layers from bottom to top, and each layer of heat dissipation pipe groups is composed of a number of heat dissipation pipes bent downward into a V-shaped or U-shaped structure (3) constitute; each heat dissipation pipe (3) is inserted with a suction pipe (5), and each water suction pipe (5) stretches out from one end of the corresponding heat dissipation pipe (3) and passes through the water distribution pipe joint (11) and the water pump ( 7) communicated, the other end of each pumping pipe (5) extends to the lowest point of the corresponding heat dissipation pipe (3); the other end of each heat dissipation pipe (3) communicates with the blower fan (10) through the air distribution pipe joint (9). The invention has high heat dissipation efficiency, good cooling effect and low construction cost, and is a heat dissipation device for concrete hydration heat.

Description

Internal heat dissipation system of large-volume goaf filling body

technical field

The invention relates to a heat dissipation system, in particular to a heat dissipation system for discharging heat of hydration and reducing the internal temperature of a large-volume filling body during the construction process of concrete filling goaf in mines, which belongs to the heat dissipation device for heat of hydration in concrete filling construction operations .

Background technique

In the process of cementing and filling large-scale gobs in mines with concrete, due to the large volume of filling body, high moisture content and temperature, and closed filling space, this humid and high-temperature environment is not conducive to cement hydration; cement cementation is affected Weakening or delaying, resulting in a decrease in the strength of the filling body, and even remains in the shape of a loose body or a mud lake for a long time. It not only causes a lot of waste of cement and increases the filling cost, but also the mining safety cannot be guaranteed. In order to speed up the normal setting and hardening of filling slurry, the heat generated during the cement hydration process must be discharged in time, so as to improve the utilization rate of cement and promote the rapid growth of filling body strength.

At present, the heat of hydration is usually reduced by adding a low-heat-of-hydration cement. Although this method is convenient, it has high requirements for cementitious materials, high cost, and a large amount of preliminary experiments. If the nature of tailings changes, its cementation performance will also change completely, which will have a negative impact on the strength of the filling body and pose a safety hazard. In addition, low heat of hydration cementitious materials are highly targeted and not universally applicable; a large number of tedious tests are required for tailings with different properties. Therefore urgently need to develop a kind of safe, convenient, efficient, low-cost, good hydration heat cooling device of heat discharge and cooling effect.

Contents of the invention

In view of the above-mentioned defects in the prior art, the present invention aims to provide a large-volume goaf filling body internal cooling system with simple structure, convenient use and high efficiency.

In order to achieve the above object, the present invention adopts the following technical solutions: it includes a fan and a heat dissipation assembly; the heat dissipation assembly is composed of a number of heat dissipation pipe groups with different curvature radii and arranged in layers from bottom to top, and each layer of heat dissipation pipe groups consists of It consists of a number of cooling pipes bent downward into a V-shaped or U-shaped structure; each of the cooling pipes is inserted with a suction pipe, and each suction pipe protrudes from one end of the corresponding cooling pipe and communicates with the water pump through the water distribution pipe joint. The other end of the water pipe extends downwards to the lowest point of the corresponding radiating pipe; the other end of each radiating pipe communicates with the fan through the air distribution pipe joint.

An air valve is connected between each cooling pipe and the air distribution pipe joint, and a water valve is connected between each water suction pipe and the water distribution pipe joint; a weight is hung on the middle section of each cooling pipe.

Compared with the prior art, the present invention adopts several radiating tube groups with different radii of curvature and layered arrangement from bottom to top due to the adoption of the above-mentioned technical solution; To achieve heat exchange with the mortar,

Thereby, the internal temperature of the mortar can be rapidly reduced. When the cooling pipe produces condensed water due to the temperature drop, it can be removed by turning on the water pump. The invention has the advantages of simple structure, convenient use, high hydration heat removal efficiency, good cooling effect, low cost and the like.

Description of drawings

Fig. 1 is the structural representation that the system of the present invention is installed on the construction site;

Fig. 2 is the top view in Fig. 1;

Figure 3 is an enlarged view of A in Figure 2;

Fig. 4 is an enlarged view of B in Fig. 2 .

In the picture:

Bottom wall channel 1, traction rope 2, heat dissipation pipe 3, gob 4, water suction pipe 5, upper wall channel 6, water pump 7, weight 8, gas distribution pipe joint 9, fan 10, water distribution pipe joint 11, air valve 12 , Water valve 13.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 4: the heat dissipation assembly is composed of a number of heat pipe groups with different curvature radii and arranged in layers from bottom to top. Tube 3 constitutes. Each cooling pipe 3 is inserted with a suction pipe 5, and each suction pipe 5 protrudes from the right end of the corresponding cooling pipe 3 and communicates with the water pump 7 through the water distribution pipe joint 11, and the left end of each suction pipe 5 extends downward to the corresponding cooling pipe. The lowest part of the pipe 3; the left end of each radiating pipe 3 communicates with the fan 10 through the air distribution pipe joint 9.

For ease of use, an air valve 12 is connected between the left end of each cooling pipe 3 and the air distribution pipe joint 9, and a water valve 13 is connected between the right end of each water suction pipe 5 and the water distribution pipe joint 11.

In the process of filling and pouring, in order to avoid the position of the lowest point of the heat dissipation pipe 3 being floated by the mortar, the middle section of each heat dissipation pipe 3 is hung with a brick made of bricks or other construction waste by bundling or bagging. The heavy hammer 8.

Working principle: when using concrete to fill large-scale goafs in mines, the concrete is first poured on the bottom of the goaf 4; ) Correspondingly fixing the two ends of the plurality of cooling pipes 3 in the lower channel 1 and the upper channel 6 to ensure that the middle sections of the cooling tubes 3 hang down naturally to form a V-shaped or U-shaped structure;

Then cover each cooling pipe 3 with mortar. When the concrete coverage reaches a certain thickness, fix the other plurality of cooling pipes 3 in the goaf 4 according to the above method; repeat the operation until the goaf 4 is filled. Then start the fan 10 to get rid of the hot air in the radiating pipes 3 of each layer, so as to realize the internal cooling of the mortar in each section of the goaf. When a certain cooling pipe 3 is unable to ventilate and dissipate heat due to condensation and water collection caused by cooling down, switch the air valve 12 and water valve 13 corresponding to the cooling pipe 3, and turn on the water pump 7 to pass through the suction pipe 5 to the cooling pipe. 3 to remove the condensed water. Repeated operations in this way can quickly reduce the temperature inside the goaf filling body, so that the filling body can be rapidly consolidated and hardened.

Claims (3)

1. cooling system inside a kind of large volume goaf filling body, including blower fan and radiating subassembly；It is characterized in that：It is described to dissipate Hot component has a different curvature radius and radiating tube group of layered arrangement is constituted from bottom to top by some, each layer radiating tube group by Some radiating tube (3) compositions for being bowed downward to V-shaped or U-shaped structure；Drinking-water pipe (5) is inserted with each radiating tube (3), respectively One end of drinking-water pipe (5) from correspondence radiating tube (3) is protruding and is connected by distributive pipe joint (11) with water pump (7), respectively takes out The other end of water pipe (5) extends downward into the lowest part of correspondence radiating tube (3)；The other end of each radiating tube (3) passes through gas-distributing pipe Joint (9) is connected with blower fan (10).

2. cooling system inside large volume goaf filling body according to claim 1, it is characterised in that：Each radiating tube (3) air valve (12) is connected between gas-distributing pipe joint (9), water valve is connected between each drinking-water pipe (5) and distributive pipe joint (11) (13)。

3. cooling system inside large volume goaf filling body according to claim 1 or 2, it is characterised in that：Each radiating The stage casing of pipe (3) is hung with weight (8).